CN214501209U - Novel pulverized coal burner - Google Patents
Novel pulverized coal burner Download PDFInfo
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- CN214501209U CN214501209U CN202120578699.5U CN202120578699U CN214501209U CN 214501209 U CN214501209 U CN 214501209U CN 202120578699 U CN202120578699 U CN 202120578699U CN 214501209 U CN214501209 U CN 214501209U
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Abstract
The utility model provides a novel pulverized coal burner, which comprises a cylindrical shell, wherein a flame guide pipe, a combustion-supporting air channel and a pulverized coal channel are arranged in the cylindrical shell; the combustion-supporting air channel is arranged on the periphery of the flame guide pipe, the pulverized coal channel is arranged on the periphery of the combustion-supporting air channel, and a guide pipe interlayer is formed between the combustion-supporting air channel and the pulverized coal channel; a combustion-supporting air inlet and a pulverized coal inlet are arranged on the side surface of the cylindrical shell close to the flame inlet, the combustion-supporting air inlet is communicated with the combustion-supporting air channel, and the pulverized coal inlet is communicated with the pulverized coal channel; the flame outlet, the combustion-supporting air channel outlet end, the pulverized coal channel outlet end and the outlet of the cylindrical shell are sequentially arranged along the flame combustion direction; swirl vanes are arranged between the outlet end of the combustion-supporting air channel and the flame outlet and between the outlet end of the pulverized coal channel and the flame outlet; the fuel combustion efficiency can be effectively improved, the stability is higher, the coal type application range is large, and the fuel combustion device is suitable for the field of combustion equipment.
Description
Technical Field
The utility model relates to a combustion apparatus's technical field, concretely relates to novel pulverized coal burner.
Background
The combustor is a core component of a pulverized coal fired boiler and is used for spraying pulverized coal and air into the coal fired boiler at a certain proportion and speed to generate violent coal gasification reaction; the performance of the pulverized coal burner can directly affect the thermal efficiency and the environmental emission of the boiler.
At present, a conventional pulverized coal burner includes a pulverized coal passage and a combustion-supporting air passage, pulverized coal is conveyed in the pulverized coal passage in a pneumatic conveying manner, the combustion-supporting air passage is used for conveying combustion-supporting air, and pulverized coal and the combustion-supporting air collide at a certain speed and angle at an outlet of the pulverized coal passage and an outlet of the combustion-supporting air passage, so that the pulverized coal and the combustion-supporting air are mixed, and pulverized coal atomization is realized and then the pulverized coal is input into a coal-fired boiler.
The traditional pulverized coal burner has the problems of insufficient mixing at an outlet, unstable combustion and low combustion efficiency, and the problem of nonstandard environmental-protection emission.
SUMMERY OF THE UTILITY MODEL
To the not enough that exists in the correlation technique, the utility model discloses the technical problem that will solve lies in: the novel pulverized coal burner can effectively improve the fuel combustion efficiency, has higher stability and large coal type application range.
In order to solve the technical problem, the utility model discloses a technical scheme does:
a novel pulverized coal burner comprising: the device comprises a cylindrical shell, a flame guide pipe, a combustion-supporting air channel and a pulverized coal channel are arranged in the cylindrical shell;
one end of the flame guide pipe is a flame inlet, and the other end of the flame guide pipe is a flame outlet;
the combustion-supporting air channel is arranged on the periphery of the flame guide pipe, the pulverized coal channel is arranged on the periphery of the combustion-supporting air channel, and a guide pipe interlayer is formed between the combustion-supporting air channel and the pulverized coal channel;
a combustion-supporting air inlet and a pulverized coal inlet are arranged on the side surface of the cylindrical shell close to the flame inlet, the combustion-supporting air inlet is communicated with the combustion-supporting air channel, and the pulverized coal inlet is communicated with the pulverized coal channel;
the flame outlet, the combustion-supporting air channel outlet end, the pulverized coal channel outlet end and the outlet of the cylindrical shell are sequentially arranged along the flame combustion direction;
swirl vanes are arranged between the outlet end of the combustion-supporting air channel and the flame outlet and between the outlet end of the pulverized coal channel and the flame outlet.
Preferably, the outlet end of the combustion-supporting air channel is provided with a first contraction portion, and the first contraction portion is gradually narrowed along the air outlet direction of the combustion-supporting air channel.
Preferably, the outlet end of the pulverized coal channel is provided with a second contraction portion, and the second contraction portion is gradually narrowed along the coal outlet direction of the pulverized coal channel.
Preferably, the flame conduit is arranged coaxially with the cylindrical housing.
Preferably, the included angle between the combustion-supporting air inlet and the pulverized coal inlet is 60 degrees.
Preferably, the cylindrical shell and the flame guide pipe are both made of high-temperature-resistant ceramic materials.
The utility model has the advantages of:
1. the utility model provides a pair of novel pulverized coal burner, include: the cylindric casing, be provided with flame guide, combustion-supporting wind passageway and buggy passageway in the cylindric casing, during the use:
the flame enters the middle part of the burner through the flame guide pipe, combustion-supporting air enters the combustion-supporting air channel from the combustion-supporting air inlet, the combustion-supporting air channel is arranged at the periphery of the flame guide pipe, so that the high-temperature in the flame guide pipe preheats the combustion-supporting air in the combustion-supporting air channel through heat transfer, and after the combustion-supporting air is blown out from the outlet end of the combustion-supporting air channel, the swirl vanes arranged between the outlet end of the combustion-supporting air channel and the flame outlet fully mix the flame and the combustion-supporting air for combustion, thereby greatly improving the burnout rate of the fuel; when the flame guided by the flame guide pipe preheats combustion-supporting air and fully burns at the outlet, the pulverized coal enters the pulverized coal channel in the combustor from the pulverized coal inlet, under the action of heat transfer, the guide pipe interlayer arranged between the combustion-supporting air channel and the pulverized coal channel firstly fully preheats the pulverized coal passing through the pulverized coal channel, and when the pulverized coal is blown out from the outlet end of the pulverized coal channel, the swirl vanes arranged between the outlet end of the pulverized coal channel and the flame outlet mix the pulverized coal and the fully burnt flame, thereby achieving the purpose of igniting the pulverized coal of the combustor.
In the utility model, the preheating of the combustion-supporting air and the coal powder, the mixing of the fuel and the combustion-supporting air in the flame guide pipe by the swirl blades, and the mixing of the coal powder and the fully combusted flame greatly improve the fuel combustion efficiency and realize the purpose of stable combustion of the coal powder; and simultaneously, the utility model discloses in, through the length of adjustment combustor, can adjust the preheating time of buggy, can ignite different coal types, thereby make the utility model discloses widen greatly the accommodation to the coal type.
2. The utility model discloses well cylindric casing and flame pipe all adopt high temperature resistant ceramic material to make, have improved the high temperature resistance and the security of combustor greatly.
3. The utility model discloses in, the exit end that makes combustion-supporting wind passageway, the exit end of buggy passageway are in the contraction state for whole passageway respectively in the first constriction part and the second constriction part that set up for pressure in combustion-supporting wind passageway and the buggy passageway increases, and the air velocity at the exit end obtains showing and improves, is convenient for fuel and combustion-supporting wind and the intensive mixing of buggy and the flame that has fully burnt, has further improved the combustion efficiency of buggy.
Drawings
FIG. 1 is a schematic structural view of a novel pulverized coal burner of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A1;
fig. 3 is a side view of the present invention;
in the figure: 1 is a cylindrical shell, 2 is a flame guide pipe, 3 is a combustion-supporting air channel, 4 is a coal powder channel, 5 is a guide pipe interlayer, 6 is a combustion-supporting air inlet, 7 is a coal powder inlet, and 8 is a rotational flow blade;
11 is an outlet, and 12 is a metal protective layer; 21 is a flame inlet, and 22 is a flame outlet; 31 is a first constriction; and 41 is a second constriction.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Next, the present invention will be described in detail with reference to the schematic drawings, and in the detailed description of the embodiments of the present invention, for convenience of illustration, the sectional view showing the device structure will not be enlarged partially according to the general scale, and the schematic drawings are only examples, and should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
An embodiment of the novel pulverized coal burner is described in detail below with reference to the accompanying drawings.
FIG. 1 is a schematic structural view of a novel pulverized coal burner of the present invention; FIG. 2 is an enlarged view of a portion of FIG. 1 at A1; fig. 3 is a side view of the present invention; as shown in fig. 1 to 3, a novel pulverized coal burner includes: the device comprises a cylindrical shell 1, wherein a flame guide pipe 2, a combustion-supporting air channel 3 and a pulverized coal channel 4 are arranged in the cylindrical shell 1;
one end of the flame guide pipe 2 is a flame inlet 21, and the other end of the flame guide pipe 2 is a flame outlet 22;
the combustion-supporting air channel 3 is arranged at the periphery of the flame guide pipe 2, the coal powder channel 4 is arranged at the periphery of the combustion-supporting air channel 3, and a guide pipe interlayer 5 is formed between the combustion-supporting air channel 3 and the coal powder channel 4;
a combustion-supporting air inlet 6 and a pulverized coal inlet 7 are arranged on the side surface of the cylindrical shell 1 close to the flame inlet 21, the combustion-supporting air inlet 6 is communicated with the combustion-supporting air channel 3, and the pulverized coal inlet 7 is communicated with the pulverized coal channel 4;
the flame outlet 22, the outlet end of the combustion-supporting air channel 3, the outlet end of the coal powder channel 4 and the outlet 11 of the cylindrical shell 1 are arranged in sequence along the flame combustion direction;
In this embodiment, the flame outlet 22, the outlet end of the combustion-supporting air channel 3, and the outlet end of the pulverized coal channel 4 are all located inside the cylindrical shell 1 and close to the outlet 11 of the cylindrical shell 1; and a certain space is reserved among the flame outlet 22, the outlet end of the combustion-supporting air channel 3 and the outlet end of the coal powder channel 4, so that when the coal powder burner is used, flame in the flame outlet 22 can be firstly mixed and combusted with combustion-supporting air to form fully combusted flame, and then mixed and combusted with coal powder, thereby realizing full combustion of coal powder and reducing economic loss caused by insufficient combustion of coal powder.
Furthermore, the included angle between the combustion-supporting air inlet 6 and the pulverized coal inlet 7 is 60 degrees; the flame guide pipe 2 is arranged coaxially with the cylindrical shell 1; the cylindrical shell 1 and the flame guide pipe 2 are both made of high-temperature-resistant ceramic materials.
Further, the exterior of the cylindrical shell 1 is connected with a metal protective layer 12 through a heat insulating layer; because ceramic material lacks toughness, in this embodiment, the cylindric casing 1 that will high temperature resistant ceramic material make passes through the insulating layer setting in metal protection layer 12, can increase joint strength on the one hand, and on the other hand can play thermal-insulated, guard action to pottery, avoids the breakage that pottery caused because of accidental collision, and then avoids the emergence of incident.
The novel pulverized coal burner that this embodiment provided includes: the cylindrical shell 1 is internally provided with a flame guide pipe 2, a combustion-supporting air channel 3 and a pulverized coal channel 4, and during use:
flame enters the middle part of the burner through the flame guide pipe 2, combustion-supporting air enters the combustion-supporting air channel 3 from the combustion-supporting air inlet 6, the combustion-supporting air channel 3 is arranged at the periphery of the flame guide pipe 2, so that the high-temperature in the flame guide pipe 2 preheats the combustion-supporting air in the combustion-supporting air channel 3 through heat transfer, after the combustion-supporting air is blown out from the outlet end of the combustion-supporting air channel 3, the swirl vanes 8 arranged between the outlet end of the combustion-supporting air channel 3 and the flame outlet 22 fully mix the flame and the combustion-supporting air for combustion, and the burnout rate of fuel is greatly improved;
when flame led in by the flame conduit 2 preheats combustion-supporting air and fully burns at an outlet, pulverized coal enters a pulverized coal channel 4 in the combustor from a pulverized coal inlet, under the action of heat transfer, a conduit interlayer 5 arranged between the combustion-supporting air channel 3 and the pulverized coal channel 4 firstly fully preheats the pulverized coal passing through the pulverized coal channel 4, and when the pulverized coal is blown out from the outlet end of the pulverized coal channel 4, a swirl vane 8 arranged between the outlet end of the pulverized coal channel 4 and a flame outlet 22 mixes the pulverized coal and the fully burnt flame to achieve the purpose of igniting the pulverized coal of the combustor.
In the utility model, the preheating of the combustion-supporting air and the coal powder, the mixing of the fuel and the combustion-supporting air in the flame guide pipe by the swirl blades, and the mixing of the coal powder and the fully combusted flame greatly improve the fuel combustion efficiency and realize the purpose of stable combustion of the coal powder; and simultaneously, the utility model discloses in, through the length of adjustment combustor, can adjust the preheating time of buggy, can ignite different coal types, thereby make the utility model discloses widen greatly the accommodation to the coal type.
Furthermore, the utility model discloses well cylindric casing 1 and flame pipe 2 all adopt high temperature resistant ceramic material to make, have improved the high temperature resistance and the security of combustor greatly.
Example two
On the basis of the first embodiment, the outlet end of the combustion-supporting air channel 3 is provided with a first contraction part 31, and the first contraction part 31 is gradually narrowed along the air outlet direction of the combustion-supporting air channel 3;
the outlet end of the pulverized coal channel 4 is provided with a second contraction part 41, and the second contraction part 41 is gradually narrowed along the coal outlet direction of the pulverized coal channel 4.
In this embodiment, the first constriction portion 31 and the second constriction portion 32 are arranged to respectively make the outlet end of the combustion-supporting air channel 3 and the outlet end of the pulverized coal channel 4 in a constriction state relative to the whole channel, so that the pressure in the combustion-supporting air channel 3 and the pulverized coal channel 4 is increased, the air velocity at the outlet ends is remarkably increased, the fuel and the combustion-supporting air as well as the pulverized coal and the fully combusted flame are conveniently and fully mixed, and the combustion efficiency of the pulverized coal is further improved.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (6)
1. A novel pulverized coal burner is characterized in that: the method comprises the following steps: the device comprises a cylindrical shell (1), wherein a flame guide pipe (2), a combustion-supporting air channel (3) and a pulverized coal channel (4) are arranged in the cylindrical shell (1);
one end of the flame guide pipe (2) is a flame inlet (21), and the other end of the flame guide pipe (2) is a flame outlet (22);
the combustion-supporting air channel (3) is arranged at the periphery of the flame guide pipe (2), the coal powder channel (4) is arranged at the periphery of the combustion-supporting air channel (3), and a guide pipe interlayer (5) is formed between the combustion-supporting air channel (3) and the coal powder channel (4);
a combustion-supporting air inlet (6) and a coal powder inlet (7) are arranged on the side surface of the cylindrical shell (1) close to the flame inlet (21), the combustion-supporting air inlet (6) is communicated with the combustion-supporting air channel (3), and the coal powder inlet (7) is communicated with the coal powder channel (4);
the flame outlet (22), the outlet end of the combustion-supporting air channel (3), the outlet end of the coal powder channel (4) and the outlet (11) of the cylindrical shell (1) are sequentially arranged along the flame combustion direction;
swirl vanes (8) are arranged between the outlet end of the combustion-supporting air channel (3) and the flame outlet (22) and between the outlet end of the pulverized coal channel (4) and the flame outlet (22).
2. The new pulverized coal burner as set forth in claim 1, characterized in that: the outlet end of the combustion-supporting air channel (3) is provided with a first contraction part (31), and the first contraction part (31) is gradually narrowed along the air outlet direction of the combustion-supporting air channel (3).
3. The new pulverized coal burner as set forth in claim 1, characterized in that: the coal dust collecting device is characterized in that a second contraction part (41) is arranged at the outlet end of the coal dust channel (4), and the second contraction part (41) is gradually narrowed along the coal outlet direction of the coal dust channel (4).
4. The new pulverized coal burner as set forth in claim 1, characterized in that: the flame guide pipe (2) is arranged coaxially with the cylindrical shell (1).
5. The new pulverized coal burner as set forth in claim 1, characterized in that: the included angle between the combustion-supporting air inlet (6) and the coal powder inlet (7) is 60 degrees.
6. The new pulverized coal burner as set forth in claim 1, characterized in that: the cylindrical shell (1) and the flame guide pipe (2) are both made of high-temperature-resistant ceramic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120578699.5U CN214501209U (en) | 2021-03-22 | 2021-03-22 | Novel pulverized coal burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120578699.5U CN214501209U (en) | 2021-03-22 | 2021-03-22 | Novel pulverized coal burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214501209U true CN214501209U (en) | 2021-10-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120578699.5U Active CN214501209U (en) | 2021-03-22 | 2021-03-22 | Novel pulverized coal burner |
Country Status (1)
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|---|---|
| CN (1) | CN214501209U (en) |
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2021
- 2021-03-22 CN CN202120578699.5U patent/CN214501209U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211210 Address after: Room 401, 4th floor, main office building, Changchun boiler instrumentation and program control equipment Co., Ltd., 9188 beikaixuan Road, Kuancheng District, Changchun City, Jilin Province, 130000 Patentee after: Jilin Juneng Network Control Technology Co.,Ltd. Address before: 030013 No. 8, unit 4, building 1, Yuanding community, Honggou North Street, Xinghualing District, Taiyuan City, Shanxi Province Patentee before: Xue Wu |
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| TR01 | Transfer of patent right |